
User Manual 107
Command Format
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF|ON|0|1
[:SENSe]:FREQuency:CENTer:STEP:AUTO?
Instruction
Specifies whether the step size is set automatically based on the span.
Gets center frequency step mode.
Parameter Type
Boolean
Parameter Range
OFF|ON|0|1
Return
0|1
Example
:FREQuency:CENTer:STEP:AUTO OFF
4.2
BW
Set the RBW (Resolution Bandwidth) and filter type. Resolution Bandwidth.
Set the resolution bandwidth in order to distinguish between signals which have frequency
components that are near one another.
⚫
Reducing the RBW will increase the frequency resolution.
⚫
RBW varies with the span (non-zero span) in Auto RBW mode.
⚫
Under under the rectangular window filter, the RBW is fixed at 49.938kHz.
RBW value range is related to filter type, please refer to filter type section for details.
Table 4-1 RBW
Parameter
Explanation
Kaiser
100.431kHz ~3.314MHz
Hanning
74.98kHz ~2.47MHz
Flattop
188.462kHz ~ 6.22MHz
Gaussian
98.797 kHz ~ 3.26MHz
Blackman-Harris
100.19kHz~ 3.31MHz
Rectangular
49.938KHz
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